Find the maximum profit and the number of units that must be produced and sold in order to yield the maximum profit. Assume that​ revenue, Upper R left parenthesis x right parenthesis​, and​ cost, Upper C left parenthesis x right parenthesis​, are in thousands of​ dollars, and x is in thousands of units.

Find the maximum profit and the number of units that must be produced and sold in order to yield the maximum profit Assume that revenue Upper R left parenthesis class=